Permutation-lock.



Patentd Sept. 26, |899. lT. .1. ZUELLER. PEnmuTATmN' Lock.

(Application and .my s, 1899.) (No Model.)

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THEODORIE J. ZOELLER, OF NASIIVILLE, TENNESSEE, ASSIGNOR 'IO TI'IE DAVIDSOT LOCK COMPANY, OF SAME PLACE.

PERM UTAT SPECIFICATION forming part of Letters Patent No. 633,711, dated September 26, 1899.

Application filed July 3, 1899, Serial No. 722,699. KNO modela To fr/ZZ 11,'7/1/1711, it 'ntf/.ry concern:

lie it known that I, THEODORE J. ZOELLER, a citizen of the United Slates,residingat Nashville, in the county of Davidson, State of Tennessee, have invented certain new and useful Improvements in Iermutation-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, suoli as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to keyless permutation-locks for use upon doors, drawers,trunks, and closures generally requiring suoli fastenings. The preferred construction contemplates the employment of suitable dial-knobs, dials, rotary notched and gated tumblerdisks, a reciprocating fence-frame, felices moving therewith, a locking-bolt, and an eccentric for throwing both the bolt and frame aforesaid when the relative position ot' parts will permit.

Theinvention may be said, then, to have for its object the arrangement and combination of component parts herein shown -and described forthe purpose of producing a simple, inexpensive, and durable construction whereby a locking-bolt may be quickly actuated or securely retained in a locked or unlocked posit-ion against the efforts of unauthorized persons.

The invent-ion will be hereinafter more particularly described, and pointed out in the claims following.

In the accompanying drawings, which form part of this specification, Figure 1 represents a face view of my improved lock, showing the face-plate, dial-knobs, dials, a bolt-actuating knob or handle, and one end of the locking-bolt. Fig. 2 is a reverse or interior plan view of the invention, illustrating the tumblerdisks, fenceframe, click or tension springs, a cam for reciprocating said frame, and a fragment of the locking-bolt. Figs.. 3 and a are side and end elevations, respectively, of parts illustrated by Fig. 1. Figs. 5 and 6 are detached detail viewsin plan, showing, respectively, the fence-frame and the locking-bolt. Fig. 7 is a plan view of one tumbler-disk detached.

Reference being had to the drawings and letters thereon, A indicates the face-plate of the lock, through which project the arbors a a of rotatable dial-knobs B B, the latter each having a flanged base hb, ii pon which are snitable degree-marks adapted to rotate with said flanged knobs and to cooperate with an index point or mark O, fixed upon the exposed. surface of the lock. Upon the inner end of arbors a d are tumbler-disks D, mounted to rotate with said arbors and their respective knobs I3 and configured by a series of equi-- distant peripheral notches c for the purpose of cooperating with click-springs d, fixed to the face-plate A, asindicated by Fig. 2. These disks D also have a radial gate E for admission of a fence at times when the vcombination is on, as will later appear, and surrounding their centers are a series of key-seats e, one of which receives a key or pin projecting from the end of arbor a to retain it in one of several positions with relation to said arbor and knob, thus providing for changes of combination.

Rising from the innersurface of face-plate A are lugs ff and g g, serving to guide a fence-frame F in its reciprocal movement, as also a locking-bolt G, the latter retained in addition by a bridge H, supported upon the lugs g g. At its outer end frameV F is provided with oppositely-extending arms I I, each terminating in a fence 72, held normally in engagement with notches c of disks D by the action of a leaf-spring J, as shown by Fig. 2, or adapted to be thrown thereby into gates E when the combination is properly set.

The opposite or inner end of frame F is broken by an irregular opening, as K, into which projects a cam L, secured to and moving with a bolt-knob M, projecting from the.

face of plate A, as shown by Figs. 1, 3, and 4L, said cam L being most clearly shown by Fig. 2. Said cam has a hammer-head il, by which the frame is engaged at its shoulders j or j and projected against action of the spring J as occasion may require. At the innermost extremity of the opening K is formed a central lug it, which also coacts with the head t' of cam L at times ywhen the combination is oit. At such times said lug obstructs the passage of the cam-head, and thereby blocks all movement of the main lockingbolt G, as will now appear.

The inner end of bolt G is broken by a transverse slot l, through which projects at all times an eccentric-pin ym, rising from the surface of cam L and serving to throw or retract the bolt with each rotation of the boltknob M unless such rotation is positively obstructed by the lug 7s when the frame F is projected.

Having thus described the invention in its preferred form of construction and arrangement of parts, its operation, brieliy stated, is as follows: Presuxning for purposes of illustration that the combination is off, fences 7L 71. will then be held in engagement with two of the notches c c by action of spring J, but can be forcibly disengaged therefrom by a partial rotation of knob M, causing the head t of cani L to engage one of the shoulders j of frame F to advance it. Under these conditions, however, the cam L aforesaid cannot be rotated in the reverse direction for the reason that its head t' would instantly engage the lug 7i'. within opening K of frame F, serving as a stop, and it being impossible thus to rotate theA cam bolt G, controlled thereby, is locked in a projected or withdrawn position, according to circumstances. Fences h hhaving been withdrawn from disksD D, as stated, the latter may be rotated bythe agency of knobs B B in the usual manner until gates E E are in alinement with said fences. By action of spring J the entire frame F is now advanced, and as a consequence the lug 7.3, at the innermost extremity thereof,is withdrawn beyond the rotary path of cani L. Rotation of said cam past the lug t' takes with it the eccentric-pin m, bearing in slot l of bolt G, the latter being accordingly shot forward or withdrawn, according to the direction of rotation. Thus it will be observed that the bolt G may be actuated and locked in either position by operation of knobs I3 B and M entirely without the aid of a detached key, and its action, owing to the structural arrangement of the lock, is rendered peculiarly sensitive and efficient under all conditions.

Having thus described the construction of l my invention, its use, and general operation,

'I claim and desire to securel by Letters Pat.-

eut-

l. In a permutation-lock the combination with a face-plate, of rotatable gated tumblerdisks, a reciprocating fence-frame and fences, a locking-bolt, and a knob-actuated cam for throwing boththe frame and bolt dissimultaneonsly and also reti-acting the bolt, substantially as described.

2. In a permutation-lock the combination with a face-plate, of rotatable gated tumblerdisks, a reciprocating fence-frame and fences, a locking-bolt, a knob-actuated cam for throwing said frame, andan eccentric-pin n pon said cam for operating the bolt aforesaid, substantially as described.

3. In a permutation-lock the combination with a face-plate, of rotatable gated tumblerdisks, a reciprocating fence-frame and fences, a locking-bolt, a knob-actuated cam within the confines of said frame for throwing it, a lug upon said frame for obstructing the path of said cam, and an eccentric-pin upon same cam for operating the bolt aforesaid, substantially as described.

4. In a permutation-lock the combination with a face-plate, of rotatable tumbler-disks, a spring-pressed reciprocating fence-frame having oppositely-disposed arms each bearing a fence, a locking-bolt, a knob-actuated cam for advancing said frame, a lug upon the frame for obstructing the path of said cam, an eccentric-pin upon same cam having a slotted connection with bolt aforesaid to opu erate it in both directions, substantially as described.

In testimony whereof I affix my signature, in presence of two witnesses, this 27th day of June, 1899.

THEODORE J. ZOELLER..

Witnesses:

JNO. A. PITTs, M. A. SPURR. 

